The British /English had a good effect on this because since they won, the land was there's and they got to expand. The Indians, on the other hand, had to find another place to live. The French probably weren't happy too because they thought they might win with the Indians but they didn't.
Slavery weakened the roman republic because Spartacus decided to fight the roman guards because he thought him and his people shouldn't have to die as gladiators so they ran away and caused much chaos
To prevent war from happening again...
hope this helps!
If I was a colonist I would feel very aggravated because if I didn't like a law it would take a few years to get back to us! This might lead to a war because the colonists would most likely rebel and boycott some of their products.
D. research towards preventing and curing disease.
hope this helps!